All Questions
Tagged with measurement temperature
28
questions
0
votes
3
answers
655
views
How "Zero" is this supposedly Zero-TCR resistor? And how much better is it than this other one?
I found a resistor at Digikey, and the TCR was quoted as being 0.0ppm/°C, and I had to check the datasheet just to refute my suspicion that it was a data entry error, and it looks real, but just how ...
- 2,892
0
votes
3
answers
457
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Why is RTD immune to electro-magnetic fields? [closed]
Thermocouples may have added voltage & induction heating induced in a magnetic field, throwing off the measurements.
A Resistance Temperature Detector (RTD) is said to be a good alternative. Why ...
- 749
1
vote
1
answer
380
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PT100 temperature sensor: meaning of "measuring current" specification
I'm measuring temperature using a PT100 temperature sensor on a Wheatstone bridge.
As I'm working on a battery powered application, I'm choosing the resistors in the bridge so that only a small ...
- 183
1
vote
2
answers
1k
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PTC thermistor vs. NTC thermistor for measuring the temperature of a liquid
I have to measure the temperature of a liquid. Does a PTC thermistor has any advantage over an NTC one? I mean, are there conditions where one is preferred over the other?
- 97
1
vote
2
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263
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How do I accurately measure the B value of an NTC thermistor?
I'm trying to find a part number for an NTC thermistor being used to monitor the temperature of a rechargeable battery. The thermistor I have has no color markings or numbers to indicate any ...
- 13
1
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3
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601
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How is a four terminal sensing compensating conductor resistances?
A four terminal sensing is used to compensate the resistances of the conductions. Why is that as I even use more conductions than in a two terminal sensing?
The current from the current source will ...
- 625
3
votes
2
answers
2k
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How do induction cookers measure temperature?
This is not exactly about electrical circuitry, but I hope it's close enough not to get me kicked out. Please redirect me if necessary.
Almost all induction tops advertise possibility to "keep ...
- 133
-1
votes
3
answers
277
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Measuring temperature of fluids inside a glass tube
Suppose I have some experiment with some fluid (e.g. water or milk) flowing through (or just residing in) a cylindrical tube made of glass.
What would be a good way to "non invasively" measure the ...
- 1,041
0
votes
2
answers
82
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Thermal considerations for electronic measurements
Background
Generally components behaviour changes with respect to temperature, e.g. a resistors resistance is a function of temperature, as is the saturation current of a BJT.
When putting a ...
- 1,856
0
votes
1
answer
811
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Does the AD8495 thermocouple amplifier allow for grounded thermocouple probes?
I recently purchased a MAX31856 thermocouple-to-digital chip for a project. However, I discovered that the chip does not support grounded thermocouples. I am looking for an alternative and the AD8495 ...
- 937
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votes
0
answers
41
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I need to measure liquid temperature down to -80C [duplicate]
Building a device that will sit inside a liquid that will be a max of -80C and trying to figure out what my options are for measuring the temperature.
I was thinking a thermocouple but not sure if ...
- 125
0
votes
2
answers
133
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How to relate voltage Output to temperature with a Wheastone bridge
I have a circuit like the one below :
with R1=10kOhms, R2 = R4 = 20kOhms and R3 is my thermistor (=10kOhms at 25°C).
I want to read the voltage V-Out on an arduino so that I can measure a ...
- 1
0
votes
2
answers
44
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How closed loop temperate control works in Ecigarette / Vaporisers
I have been reading about the use of heating elements made from Nickel and Stainless Steel in Ecigarettes. They are used as their resistance changes approximately linearly over the temperature range ...
- 163
2
votes
2
answers
1k
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Digital temperature meter probe wire length
I bought a cheap Chinese digital thermometer like this one
with this description Link to product
Item specifics
...
- 21
3
votes
3
answers
2k
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Measure temperature of IC/Microcontroller
I want to measure the temperature of IC/Microcontroller. There is no On-die temperature sensor to measure the heat. I need to check how much hot the controller gets. The LM35 or DHT11 Temperature will ...
- 530